There are many notable hundredth anniversaries in 2025. This year marks the origin of Hey Song, Taiwan's singular sarsaparilla; Kewpie Mayonnaise, known for its tang and naked dolls; Bontan Ame, a railway kiosk staple with gentle pomelo flavor; and even the naming of the Miura Daikon, which is much too big to be called a mere vegetable. But one particular event turned out to be happily unremarkable. 2025 was the hundreth year of the Showa imperial era, and, thankfully, at one minute past midnight on January 1, 2025, nothing happened.